Voltage Sag Matigation in Distribution Network by Dynamic Voltage Restorer

Aftab Ali Samejo, Zubair Ahmed Memon, Mukhtiar Ahmed Mahar and Abdul Sattar Larik
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Aftab Ali Samejo: Department of Electrical Engineering, Mehran University of Engineering & Technology, Jamshoro, Pakistan
Zubair Ahmed Memon: Department of Electrical Engineering, Faculty of Electrical, Electronics and Computer Engineering, Mehran University of Engineering & Technology, Jamshoro, Pakistan
Mukhtiar Ahmed Mahar: Department of Electrical Engineering, Faculty of Electrical, Electronics and Computer Engineering, Mehran University of Engineering & Technology, Jamshoro, Pakistan
Abdul Sattar Larik: Department of Electrical Engineering, Faculty of Electrical, Electronics and Computer Engineering, Mehran University of Engineering & Technology, Jamshoro, Pakistan

Noble International Journal of Scientific Research, 2017, vol. 1, issue 11, 112-121

Abstract: Presently, most power quality issues in distribution networks are identified by voltage sags. Therefore, various solutions have been attempted to mitigate these voltage sags in the distribution network in order to avoid economic losses. Dynamic voltage restorers (DVRs) are being more recognized in distribution networks in reducing the effect of voltage sags to critical loads. The DVR, which is arranged in series with a critical load, must have capability to generate and absorb the active and reactive power from the system. In this paper, a dynamic voltage restorer is modelled based on Cascaded double-loop vector control method for voltage sag mitigation. The proposed approach is to illustrate these by an example of a real Pakistani distribution system. A feeder of Gulzar colony Hyderabad is modelled in Matlab/Simulink software for power quality analysis and simulations are carried out to verify the results.

Keywords: Power Quality; Voltage Sag; Custom Power Devices; Dynamic Voltage Restorer (DVR); Vector Control Method. (search for similar items in EconPapers)
Date: 2017
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